John 14:17

"He remaineth with you." This showeth that even after death It departeth not. But lest when they heard of the "Paraclete," they should imagine a second Incarnation, and expect to see It with their eyes, He setteth them right by saying, "Whom the world cannot receive, because it seeth Him not." "He will not be with you as I have been, but will dwell in your very souls"; for this is the, "shall be in you." He calleth it the "Spirit of truth"; thus explaining the types in the Old Testament. "That He may be with you." What is, "may be with you"? That which He saith Himself, that "I am with you." Besides, He also implieth something else, that "the case of the Spirit shall not be the same as Mine, He shall never leave you." "Whom the world cannot receive, because it seeth Him not." "Why, what is there belonging to the other Persons that is visible?" Nothing; but He speaketh here of knowledge; at least He addeth, "neither knoweth Him." For He is wont, in the case of exact knowledge, to call it "sight"; because sight is clearer than the other senses, by this He always representeth exact knowledge. By "world," He here speaketh of "the wicked," thus too comforting the disciples by giving to them a special gift. See in how many particulars He raised His discourse concerning It. He said, "He is Another like unto Me"; He said, "He will not leave you"; He said, "Unto you alone He cometh, as also did I"; He said, that "He remaineth in you"; but not even so did He drive out their despondency. For they still sought Him and His society. To cure then this feeling, He saith, "I will not leave you orphans, I will come unto you."

"But ye," He adds, "shall know Him; for He shall dwell with you, and be in you." He will be in them, that He may dwell with them; He will not dwell with them to the end that He may be in them: for the being anywhere is prior to the dwelling there. But to prevent us from imagining that His words, "He shall dwell with you," were spoken in the same sense as that in which a guest usually dwells with a man in a visible way, He explained what "He shall dwell with you" meant, when He added the words, "He shall be in you." He is seen, therefore, in an invisible way: nor can we have any knowledge of Him unless He be in us. For it is in a similar way that we come to see our conscience within us: for we see the face of another, but we cannot see our own; but it is our own conscience we see, not another's. And yet conscience is never anywhere but within us: but the Holy Spirit can be also apart from us, since He is given that He may also be in us. But we cannot see and know Him in the only way in which He may be seen and known, unless He be in us.

But further, lest any should imagine that the Father and Son only, without the Holy Spirit, make their abode with those that love Them, let him recall what was said above of the Holy Spirit, "Whom the world cannot receive, because it seeth Him not, neither knoweth Him: but ye shall know Him; for He shall dwell with you, and shall be in you." Here you see that, along with the Father and the Son, the Holy Spirit also taketh up His abode in the saints; that is to say, within them, as God in His temple. The triune God, Father, and Son, and Holy Spirit, come to us while we are coming to Them: They come with help, we come with obedience; They come to enlighten, we to behold; They come to fill, we to contain: that our vision of Them may not be external, but inward; and Their abiding in us may not be transitory, but eternal. The Son doth not manifest Himself in such a way as this to the world: for the world is spoken of in the passage before us as those, of whom He immediately adds, "He that loveth me not, keepeth not my sayings." These are such as never see the Father and the Holy Spirit: and see the Son for a little while, not to their attainment of bliss, but to their condemnation; and even Him, not in the form of God, wherein He is equally invisible with the Father and the Holy Spirit, but in human form, in which it was His will to be an object of contempt in suffering, but of terror in judging the world.

Note too, that when He calls the Holy Spirit the Spirit of truth, He shows that the Holy Spirit is His Spirit: then when He says He is given by the Father, He declares Him to be the Spirit of the Father also. Thus the Holy Ghost proceeds both from the Father, and from the Son.

(Tract. lxxiv. 4) Wherein He shows too that He Himself is the Comforter. Paraclete means advocate, and is applied to Christ: We have an Advocate with the Father, Jesus Christ the righteous. (1 John 2:1) (contra Serm. Arrian. c. xix.) Yet to show that His works are inseparable from His Father's, He says below, When I shall go, I will send Him unto you. (Tract. lxxiv. 1) This is the Holy Ghost in the Trinity, Whom the Catholic faith professes to be consubstantial and coeternal with the Father and the Son. (Tract. lxxiv. 4) Thus the world, i. e. the lovers of the world, cannot, He says, receive the Holy Spirit: that is to say, unrighteousness cannot be righteous. The world, i. e. the lovers of the world, cannot receive Him, because it seeth Him not. The love of the world hath not invisible eyes wherewith to see that, which can only be seen invisibly. It follows: But ye know Him, for He dwelleth (manebit) with you. And that they might not think this meant a visible dwelling, in the sense in which we use the phrase with respect to a guest, He adds, And shall be in you. (Tract. lxxiv. 5) To be in a place is prior to dwelling. Be in you, is the explanation of dwell with you: i. e. shows that the latter means not that He is seen, but that He is known, He must be in us, that the knowledge of Him may be in us. We see the Holy Ghost then in us, in our consciences. (contr. Serm. Arrian. c. xix.) Comforter, the title of the Holy Spirit, the third Person in the Trinity, the Apostle applies to God: God that comforteth those that are cast down, comforted us. (2 Cor. 7:6) The Holy Spirit therefore Who comforts those that are cast down, is God. Or if they will have this said by the Apostle of the Father or the Son, let them not any longer separate the Holy Spirit from the Father and the Son, in His peculiar office of comforting. (Tract. lxxiv. c. 1) But when the love of God is shed abroad in our hearts by the Holy Ghost which is given unto us, (Rom. 5:6) how shall we love and keep the commandments of Christ, so as to receive the Spirit, when we are not able to love or to keep them, unless we have received the Spirit? Does love in us go first, i. e. do we so love Christ and keep His commandments as to deserve to receive the Holy Spirit, and to have the love of God the Father shed abroad in our hearts? This is a perverse opinion. For he who does not love the Father, does not love the Son, however he may think he does. (c. 2). It remains for us to understand, that he who loves has the Holy Spirit, and by having Him, attains to having more of Him, and by having more of Him, to loving more. The disciples had already the Spirit which our Lord promised; but they were to be given more of Him: they had Him secretly, they were to receive Him openly. The promise is made both to him who has the Spirit, and to him who has Him not; to the former, that he shall have Him; to the latter, that He shall have more of Him.